TY - JOUR
T1 - Cold-formed stainless steel RHS members undergoing combined bending and web crippling
T2 - Testing, modelling and design
AU - Li, Hai Ting
AU - Young, Ben
N1 - Funding Information:
The authors are grateful to STALA Tube Finland for providing the test specimens. This research work was supported by a grant from the National Natural Science Foundation of China (Project No. 52008243) and by Shanghai Sailing Program (Project No. 20YF1419600).
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2022/1/1
Y1 - 2022/1/1
N2 - The behaviour and resistances of cold-formed stainless steel rectangular hollow section (RHS) members undergoing combined bending and web crippling were studied based upon experimental and numerical investigations. A test program consists of 4 pure bending tests, 7 pure web crippling tests and 23 web crippling-bending interaction tests was conducted. The RHS specimens were cold-rolled from lean-duplex and ferritic stainless steel sheets. Numerical models were built and validated against the test results. Upon validation, parametric studies comprised of 312 finite element analyses were undertaken. The obtained test and numerical results were compared with nominal resistances predicted from the American, Australian/New Zealand and European design standards for stainless steel structures. Moreover, the provisions in the North American Specification for cold-formed steel members were also evaluated. The comparison results indicate that the codified design provisions are generally safe to use for design of cold-formed stainless steel RHS members undergoing combined bending and web crippling, among which the European provision yields overly-conservative predictions. The codified web crippling-bending interaction curves can be applied for designing the stainless steel RHS members undergoing combined bending and web crippling, whilst improved predictions could be achieved by employing recently proposed bending and web crippling design rules.
AB - The behaviour and resistances of cold-formed stainless steel rectangular hollow section (RHS) members undergoing combined bending and web crippling were studied based upon experimental and numerical investigations. A test program consists of 4 pure bending tests, 7 pure web crippling tests and 23 web crippling-bending interaction tests was conducted. The RHS specimens were cold-rolled from lean-duplex and ferritic stainless steel sheets. Numerical models were built and validated against the test results. Upon validation, parametric studies comprised of 312 finite element analyses were undertaken. The obtained test and numerical results were compared with nominal resistances predicted from the American, Australian/New Zealand and European design standards for stainless steel structures. Moreover, the provisions in the North American Specification for cold-formed steel members were also evaluated. The comparison results indicate that the codified design provisions are generally safe to use for design of cold-formed stainless steel RHS members undergoing combined bending and web crippling, among which the European provision yields overly-conservative predictions. The codified web crippling-bending interaction curves can be applied for designing the stainless steel RHS members undergoing combined bending and web crippling, whilst improved predictions could be achieved by employing recently proposed bending and web crippling design rules.
KW - Bearing
KW - Bending
KW - Cold-formed stainless steel
KW - Ferritic stainless steel
KW - Lean duplex stainless steel
KW - Rectangular hollow sections
KW - Web crippling
UR - http://www.scopus.com/inward/record.url?scp=85122503314&partnerID=8YFLogxK
U2 - 10.1016/j.engstruct.2021.113466
DO - 10.1016/j.engstruct.2021.113466
M3 - Journal article
AN - SCOPUS:85122503314
SN - 0141-0296
VL - 250
JO - Engineering Structures
JF - Engineering Structures
M1 - 113466
ER -